Properties of Gases - Chem Labpaq

Topics: Oxygen, Gas, Carbon dioxide Pages: 2 (681 words) Published: March 4, 2013
Properties of Gases

General Chemistry 1
Lab 5

The purpose of this experiment is to examine the properties of several gasses, which were the products of a reaction, and examine the way the gasses react under certain conditions. These conditions, such as introducing a flame to the gas as well as oxygen and CO2, caused other reactions to occur. Hypothesis:

If the gasses are correctly synthesized then there will be a clear reaction with the introduction of the flame, O2, CO2, Air, limewater, and Bromthymol indicator. Procedures:
Step 1. I placed a small amount of Mossy Zn in the test tube and then added HCL. I used the rubber stopper and a pipet bulb to collect the Hydrogen gas synthesis. I filled the pipet bulb with water and placed it over the rubber stopper and waited for the H2 to completely displace the water. Once it had displaced the water, I removed the bulb and gently squeezed it into the match flame. There was a very audible “pop” and I observed the combustion of the H2. (Step 1 cont.) I filled another pipet bulb with 2/3 H2 and set it aside for later use. Step 2. I placed a small amount of Manganese into the test tube and added enough 3% H2O2 to nearly fill the test tube. Using the same rubber stopper/bulb mechanism, I collected the O2 gas that was synthesized. Once all of the water had been displaced, I lit a toothpick on fire and let it burn for a few seconds until it was extinguished. I removed the pipet bulb and inserted the glowing toothpick into the bulb and observed the glowing embers reignite momentarily. Step 3. Using the H2 bulb from Step 1, I placed the bulb over the O2 gas delivery tube and displaced the rest of the water with oxygen. I removed the pipet bulb and introduced the gas to the flame. I observed no reaction with this gas. Step 4. Using the Baking soda and white vinegar, I combined the two in the gas delivery tube and waited for the reaction to settle before attaching the stopper. I filled another pipet bulb with...
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